Hello,
Did anyone tried to use some still good Grey V4 mixed with Grey V4.1 Resin ?
We have 2 liters of Grey Left and want to shift to Grey V4.1 with the new resin tank.
I know formlabs de not recommend mixing them here : Resin version history
But with little quantity of resin would that work ok ?
We don’t really want to toss 300€ of resin that could be used 
Good Morning @serret
Thank you for writing us here in the Forums. We do not recommend mixing Grey V4 with Grey V4.1 as the composition of the resin is not the same. If there is a tiny bit of Grey V4 in the tank after cleaning it out, Grey V4.1 should be okay.
It’s fine. Don’t let them fool you the objective is to sell more.
I faced the same issue with my last grey cartrigde and it now almost empty
all this models processed with v4 profile but the machine has v4.1 not a bit, the whole tank is v4.1 and the model has been processed with v4 profile.
Models came out ok the resin is much more flexible than the previous one which is good.
